Release Taskboard v0.3.0

[MateoCerquetella]

Summary

• adds durable project-scoped List/Kanban preferences shared by full and right-panel Taskboard surfaces, including search, filters, collapse state, view, and provider-safe reset behavior
• adds provider-aware direct issue capture with native fields and confirmed assignee defaults for GitHub, Linear, and Jira
• refreshes the responsive List/detail/filter presentation with compact status glyphs, accessible assignee avatars, filter icons, constrained keyboard search, and conversation-rail detail
• hardens ambiguous provider writes, untrusted external issue context, metadata error disclosure, provider pagination, and GitHub reconciliation
• prepares bb-plugin-taskboard@0.3.0 and its immutable release/marketplace evidence

Verification

• root npm run check
• Taskboard TypeScript, 85/85 tests, production build, and build metadata verifier
• Usage Tracker TypeScript, 13/13 tests, and production build unchanged
• live BB walkthrough for full/right search restore, detail/back, keyboard filter focus, long-value overflow, case-canonical facets, and announced metadata errors
• exact npm archive audit: 53 members, all source/build bytes matched, no credential/test/node_modules paths
• archive SHA-256: 9004d7495775ad696ad35517532eaacbd0e4558d429eda5eca55af9d9dca4f08

Release

• package: bb-plugin-taskboard@0.3.0
• tag after merge: taskboard/v0.3.0
• marketplace range after npm confirmation: ^0.3.0